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Finding the Fourth Proportional to 291,992.40, 437,686.20 and 158,590.80

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Solution

The fourth proportional to 291,992.40, 437,686.20 and 158,590.80 is: 237,721.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,992.40 : 437,686.20 = 158,590.80 : x
  2. Step 2: Convert to fraction form
    291,992.40/437,686.20 = 158,590.80/x
  3. Step 3: Cross multiply
    291,992.40x = 437,686.20 × 158,590.80
  4. Step 4: Simplify right side
    291,992.40x = 69,413,004,606.96
  5. Step 5: Solve for x
    x = 69,413,004,606.96/291,992.40
  6. Step 6: Final answer
    x = 237,721.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.